a = [1,2,3]
b = [4,5,6]

print zip(a, b)
print list(zip(a, b))
print list(zip(a,a,b))
for i, j in zip(a, b):
	print i/2.0, j*2

def add(x,y):
	return x+y

add2 = lambda x,y:x+y
print add(2,3)
print add2(2,3)

print map(add, [1], [2])
print list(map(add, [1], [2]))
print list(map(add, [1,4], [2,7]))